Practical silicon photonic multi-function integrated-optic chip for fiber sensor applications
a fiber sensor and integrated optic chip technology, applied in the field of optical chips, can solve the problem that silicon photonics can monolithically integrate signal-processing circuits on a single chip, and achieve the effects of reducing the footprint of the device, low loss, and small siz
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embodiment 1
[0051]2. An optic chip as claimed in Embodiment 1 further comprising a bottom clad layer, wherein the waveguide, the top clad layer, and the bottom clad layer have a first, a second and a third refractive index respectively, the first refractive index is bigger than the second refractive index, and the second refractive index is bigger than the third refractive index.
embodiment 2
[0052]3. An optic chip as claimed in Embodiment 2, wherein the waveguide is a guiding layer made from the silicon, the top clad layer is the silicon carbide (SiC), and the bottom clad layer is the silicon dioxide.
[0053]4. An optic chip as claimed in Embodiment 1, wherein the waveguide is a taper waveguide.
embodiment 4
[0054]5. An optic chip as claimed in Embodiment 4, wherein the taper waveguide can guide one of the TE and TM electromagnetic waves to the output side of the polarization diversity coupler.
[0055]6. An optic chip as claimed in Embodiment 1, wherein the thicknesses of the waveguide and the top clad layer are obtained by FimmWave simulation or BPM simulation or the other simulation softwares.
[0056]7. An optic chip as claimed in Embodiment 1, wherein the top clad layer turns out the optic chip in 90 degree or any other bending angle adequate to reach the edge of the optic chip for outputting the unwanted polarized electromagnetic waves from the polarization diversity coupler.
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